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公开(公告)号:US20100020243A1
公开(公告)日:2010-01-28
申请号:US12521968
申请日:2008-09-09
IPC分类号: H04N5/16
CPC分类号: H04N5/18 , G09G5/003 , H04N5/46 , H04N21/426 , H04N21/4436
摘要: In a video signal processor (10), a video signal is given to a video input terminal (101) via a coupling capacitor (200). A clamp circuit (104) clamps the video signal input via the video input terminal (101). A format detector section (105) detects a format of the video signal. A controller section (107) changes power supply capability of the clamp circuit (104) according to a detection result of the format detector section (105).
摘要翻译: 在视频信号处理器(10)中,通过耦合电容器(200)向视频输入端子(101)提供视频信号。 钳位电路(104)经由视频输入端(101)钳位输入的视频信号。 格式检测器部分(105)检测视频信号的格式。 控制部(107)根据格式检测部(105)的检测结果来改变钳位电路(104)的供电能力。
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公开(公告)号:US20100066908A1
公开(公告)日:2010-03-18
申请号:US12513632
申请日:2008-09-09
申请人: Katsuyuki Kitano , Tadanori Komura
发明人: Katsuyuki Kitano , Tadanori Komura
IPC分类号: H04N5/06
CPC分类号: H04N5/10
摘要: A sync separation section separates an external horizontal synchronizing signal from an input video signal. A line locked PLL receives the external horizontal synchronizing signal as a reference signal and generates an internal horizontal synchronizing signal. A determination section computes a time integral value of a phase difference between the external horizontal synchronizing signal and the internal horizontal synchronizing signal and determines whether or not the time integral value exceeds a threshold value. A control section performs the control of switching an output frequency of the line locked PLL based on a determination result from the determination section.
摘要翻译: 同步分离部分从输入视频信号中分离外部水平同步信号。 线锁定PLL接收外部水平同步信号作为参考信号,并产生内部水平同步信号。 确定部分计算外部水平同步信号和内部水平同步信号之间的相位差的时间积分值,并确定时间积分值是否超过阈值。 控制部根据来自确定部的判定结果,进行切换线锁定PLL的输出频率的控制。
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